1071643814 has 32 divisors (see below), whose sum is σ = 1740463200. Its totient is φ = 493205760.

The previous prime is 1071643787. The next prime is 1071643819. The reversal of 1071643814 is 4183461701.

It is a happy number.

It is a super-2 number, since 2×1071643814² = 2296840928168933192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071643819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417824 + ... + 420380.

It is an arithmetic number, because the mean of its divisors is an integer number (54389475).

Almost surely, 2^1071643814 is an apocalyptic number.

1071643814 is a deficient number, since it is larger than the sum of its proper divisors (668819386).

1071643814 is a wasteful number, since it uses less digits than its factorization.

1071643814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1071643814 is about 32735.9712548750. The cubic root of 1071643814 is about 1023.3326257273.

The spelling of 1071643814 in words is "one billion, seventy-one million, six hundred forty-three thousand, eight hundred fourteen".